新概念英语一册语法总复习(课堂PPT)
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一.时态:一般现在时,现在进行时,一般过去时,现在完成时,一般将来时,过去进行时,过去完成时,过去将来时1. 一般现在时表示一般性,经常性的动作或一般性事实。
含有be动词的句子He is a teacher.The girl is very beautiful.Tim and Jack are stude nts.★变疑问句将be动词移到句首Is he a teacherIs the girl very beautifulAre Tim and Jack stude nts★变否定句在be动词后面加notHe is not a teacher.The girl is not very beautiful.Tim and Jack are not stude nts.★肯定回答及否定回答Yes, he is. No, he is not.Yes, she is. No, she is not.Yes, they are. No, they are not.不含有动词的句子,即含有一般动词的句子第三人称单数及单数名词He likes books.She likes him.The dog likes bon es.★变疑问句在句首加does,动词变为原型_Does he like booksDoes she like himDoes the dog like bones★变否定句在主语及动词之间加does n' t动词变为原型He doesn ' t like books.She doesn ' t like him.The dog doesn ' t like bones.★肯定回答及否定回答:Yes, he does. No, he doesn t.Yes, she does. No, she does n 'tYes, it does. No, it doesn ' t.注意:第三人称单数形式一般在动词后面加S,不要和名词复数混淆,变否定句或疑问句时名词复数没有任何变化。